/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.trino.node;

import com.google.common.cache.CacheBuilder;
import com.google.common.collect.ImmutableSet;
import io.trino.cache.SafeCaches;

import java.net.URI;
import java.util.Set;

import static java.util.Collections.newSetFromMap;
import static java.util.concurrent.TimeUnit.SECONDS;

public class AnnounceNodeInventory
        implements NodeInventory
{
    private final Set<URI> nodes = newSetFromMap(SafeCaches.<URI, Boolean>buildNonEvictableCache(CacheBuilder.newBuilder()
                    .expireAfterWrite(30, SECONDS))
            .asMap());

    public void announce(URI node)
    {
        nodes.add(node);
    }

    @Override
    public Set<URI> getNodes()
    {
        return ImmutableSet.copyOf(nodes);
    }
}
